package com.xiaoquan.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.xiaoquan.common.constant.ProductConstant;
import com.xiaoquan.common.to.SkuHasStockVo;
import com.xiaoquan.common.to.SkuReductionTo;
import com.xiaoquan.common.to.SpuBoundTo;
import com.xiaoquan.common.to.es.SkuEsModel;
import com.xiaoquan.common.utils.R;
import com.xiaoquan.gulimall.product.entity.*;
import com.xiaoquan.gulimall.product.feign.CouponFeignService;
import com.xiaoquan.gulimall.product.feign.SearchFeignService;
import com.xiaoquan.gulimall.product.feign.WareFeignService;
import com.xiaoquan.gulimall.product.service.*;
import com.xiaoquan.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.xiaoquan.common.utils.PageUtils;
import com.xiaoquan.common.utils.Query;

import com.xiaoquan.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService productAttrValueService;
    
    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        // 1、保存spu的基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);

        // 2、保存spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity spuInfoDescEntity = new SpuInfoDescEntity();
        spuInfoDescEntity.setSpuId(spuInfoEntity.getId());
        spuInfoDescEntity.setDecript(String.join(",",decript)); // TODO 将集合中的字符串用逗号拼接起来
        spuInfoDescService.saveSpuInfoDesc(spuInfoDescEntity);

        // 3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(),images);

        // 4、保存spu的规格参数 pms_sku_sale_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(attr.getAttrId());
            AttrEntity byId = attrService.getById(attr.getAttrId());
            productAttrValueEntity.setAttrName(byId.getAttrName());
            productAttrValueEntity.setAttrValue(attr.getAttrValues());
            productAttrValueEntity.setQuickShow(attr.getShowDesc());
            productAttrValueEntity.setSpuId(spuInfoEntity.getId());
            return productAttrValueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttrValues(collect);

        // 5、保存spu的积分信息 跨表查询  gulimall_sms --> sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
//                spuBoundTo.setBuyBound(bounds.getBuyBounds());
//                spuBoundTo.setGrowBound(bounds.getGrowBounds());
        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0){
            log.error("远程服务-->saveSpuBounds：调用失败");
        }

        // 6、保存当前spu对应的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0) {
            skus.forEach(item->{
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    defaultImg = image.getImgUrl();
                }
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                // 6.1）、sku的基本信息 pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();  //  保存以后 自增主键 就出来了（Id 回显/回填）

                List<SkuImagesEntity> skuImagesEntityList = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{ // 过滤器  返回true就是需要  返回false 就是剔除
                    String imgUrl = entity.getImgUrl();
                    return !StringUtils.isEmpty(imgUrl);
                }).collect(Collectors.toList());
                // TODO 没有图片路径的无需保存
                // 6.2）、sku的图片信息 pms_sku_images
                skuImagesService.saveBatch(skuImagesEntityList);
                // 如果 方法不被复用 就直接调用MyBatis-Plus写好的方法 如果存在复用的情况下就自定义一个方法

                // 6.3）、sku的销售属性信息 pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> saleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);
                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());

                skuSaleAttrValueService.saveBatch(saleAttrValueEntities);


                // 6.4）、sku的优惠、满减等信息  跨表查询 gulimall-sms -->sms_sku_ladder、sms_sku_full_reduction、sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0){
                        log.error("远程服务-->saveSkuReduction：调用失败");
                    }
                }


            });
        }



    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("id",key).or().like("spu_name",key);
            }); // status = 1 and (id=key or name = key)  就是将或的条件用括号拼接起来了
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId)  && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );
        return new PageUtils(page);
    }

    /**
     * 商品上架功能
     * @param spuId
     */
    @Override
    public void up(Long spuId) {

        // 1、查出当前spuId对应的sku信息，品牌的名字等等
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);

        // TODO 4、查询当前sku的所有 可以被用来检索的规格属性，
        List<ProductAttrValueEntity> baseAttrListforspu = productAttrValueService.baseAttrListforspu(spuId);
        List<Long> attrValueIds = baseAttrListforspu.stream().map(attr -> { // 找到属性值中 spu_id为同一个的 属性值id 封装成一个集合
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrsIds(attrValueIds); // 在指定的属性集合里面 挑出检索属性

        Set<Long> idSet = new HashSet<>(searchAttrIds);
        List<SkuEsModel.Attrs> attrsList = baseAttrListforspu.stream().filter(item -> {
            return idSet.contains(item.getAttrId()); // 包含了就是要用的数据
        }).map(item -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        List<Long> skuIdsList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList()); // skuIdsList集合

        // TODO 1、发送远程调用，查询库存系统是否 有库存 不需要查询数量
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkusHasStock(skuIdsList);
            TypeReference<List<SkuHasStockVo>> typeReference =  // 自动转换我们要指定的类型
                    new TypeReference<List<SkuHasStockVo>>() {}; //静态内部类

            stockMap =r.getData(typeReference).stream().collect(Collectors
                .toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询失败：原因{}",e);
        }
        // TODO 2、封装每个Sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(s -> { // 需要上架的商品(对象)集合
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel(); // 每一个商品都要封装成一个 模型(对象)
            BeanUtils.copyProperties(s,esModel); // 直接复制的话，还是有些属性名不对应，需要手动设置
            esModel.setSkuPrice(s.getPrice());
            esModel.setSkuImg(s.getSkuDefaultImg());

            // hasStock,hotScore
            // 设置库存信息
            if (finalStockMap == null){
                esModel.setHasStock(true);
            }else {
                esModel.setHasStock(finalStockMap.get(s.getSkuId()));
            }
            // TODO 2、查询热度评分 刚上架的商品默认为0 如果要置顶 另外在操作
            esModel.setHotScore(0L);
            // 3、查询品牌和分类的名字信息
            BrandEntity brandEntity = brandService.getById(esModel.getBrandId());
            CategoryEntity categoryEntity = categoryService.getById(esModel.getCatalogId());
            esModel.setBrandName(brandEntity.getName());
            esModel.setBrandImg(brandEntity.getLogo());
            esModel.setCatalogName(categoryEntity.getName());

            // 设置检索属性
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        // TODO 5、将数据发送给gulimall-search 再发送给es 进行保存；
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0){
             // 远程调用成功状态码 是0
            // TODO  6、修改商品状态信息 由新建状态 --> 上架状态
            baseMapper.updateSpuStatus(spuId,ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            // 远程调用失败
            // TODO 坑  7、重复调用：专业术语--> 接口幂等性; 重试机制
        }

    }

}